Upside Down (Lindotian War, #2)

Decades into the intergalactic Lindotian war, Commander Jeff Langley transports SpaceForce Marines to an isolated planet to put down a rebellion. When he joins the fight, one of his greatest fears comes true. Marine Colonel Rell ta Bakinee is mortally wounded before his eyes, and Jeff stands to lose more than his fellow officer and best friend... he might lose the unacknowledged love of his life. Jeff races to save Rell's life despite the battle's devastation, because even if his love is never returned, the universe won't be worth saving without Rell beside him.